Mariadb-Galera集群雜記
阿新 • • 發佈：2018-03-21
Mariadb Galera 集群 雜記Galera Cluster
Galera Cluster
1、需要專門下載支持Galera-Cluster支持的mariadb分支
1.1
需要準備三個節點；1.2 配置時間同步
[root@master1 ~]# ntpdate s2c.time.edu.cn [root@master2 ~]# ntpdate s2c.time.edu.cn [root@master3 ~]# ntpdate s2c.time.edu.cn 配置yum源： [root@master1 galera_cluster]# vim /etc/yum.repos.d/galera.repo [galera] name=Galera Cluster from MariaDB baseurl=http://10.201.106.1:8080/galera_cluster/ enabled=1 gpgcheck=0 [root@master1 galera_cluster]# yum list | grep Gale MariaDB-Galera-server.x86_64 5.5.46-1.el7.centos galera MariaDB-Galera-test.x86_64 5.5.46-1.el7.centos galera
2、清除之前的mariadb
yum remove mariadb-server
yum remove mariadb3、安裝
3.1 安裝Galera
[root@master1 galera_cluster]# yum install MariaDB-Galera-server
[root@master2 galera_cluster]# yum install MariaDB-Galera-server
[root@master3 galera_cluster]# yum install MariaDB-Galera-server3.2 查看安裝生成文件
[root@master1 ~]# rpm -ql galera | grep -i smm.so /usr/lib64/galera/libgalera_smm.so
4、配置Galera-server
4.0
[root@master1 ~]# rpm -ql galera | grep -i smm.so
/usr/lib64/galera/libgalera_smm.so4.1 配置
[root@master1 ~]# vim /etc/my.cnf.d/server.cnf [galera] # Mandatory settings wsrep_provider=/usr/lib64/galera/libgalera_smm.so wsrep_cluster_address="gcomm://10.201.106.131,10.201.106.132,10.201.106.133" binlog_format=row default_storage_engine=InnoDB innodb_autoinc_lock_mode=2 bind-address=0.0.0.0 wsrep_cluster_name=‘mycluster‘ # # Optional setting #wsrep_slave_threads=1 #innodb_flush_log_at_trx_commit=0
4.2 復制文件到節點2,3
[root@master1 ~]# scp /etc/my.cnf.d/server.cnf master2:/etc/my.cnf.d/
server.cnf 100% 1140 1.1KB/s 00:00
[root@master1 ~]# scp /etc/my.cnf.d/server.cnf master3:/etc/my.cnf.d/
server.cnf 100% 1140 1.1KB/s 00:00
[root@master1 ~]# 5、啟動
5.1 初始化啟動服務
[root@master1 ~]# /etc/rc.d/init.d/mysql start --wsrep-new-cluster
Starting MySQL...... SUCCESS!
節點2,3啟動
[root@master2 galera_cluster]# service mysql start
Starting MySQL.....SST in progress, setting sleep higher. SUCCESS!
[root@master2 galera_cluster]#
[root@master3 galera_cluster]# service mysql start
Starting MySQL.....SST in progress, setting sleep higher. SUCCESS!
[root@master3 galera_cluster]# 5.2 測試創建
節點1
MariaDB [(none)]> CREATE DATABASE mydb;
節點3
MariaDB [(none)]> SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mydb |
節點2
MariaDB [mydb]> CREATE TABLE tb1(id int,name char(10));
節點1：
MariaDB [mydb]> DESC tb1;
+-------+----------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+----------+------+-----+---------+-------+
| id | int(11) | YES | | NULL | |
| name | char(10) | YES | | NULL | |
+-------+----------+------+-----+---------+-------+6、演示同時插入數據
6.1
節點1
MariaDB [mydb]> CREATE TABLE tb2(id int UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY,name CHAR(30));
MariaDB [mydb]> INSERT INTO tb2 (name) VALUES(‘hi‘),(‘hello‘);
節點2
MariaDB [mydb]> SELECT * FROM tb2;
+----+-------+
| id | name |
+----+-------+
| 1 | hi |
| 4 | hello |
MariaDB [mydb]> INSERT INTO tb2(name) VALUES (‘to‘),(‘from‘);
Query OK, 2 rows affected (0.02 sec)
Records: 2 Duplicates: 0 Warnings: 0
MariaDB [mydb]> SELECT * FROM tb2;
+----+-------+
| id | name |
+----+-------+
| 1 | hi |
| 4 | hello |
| 5 | to |
| 8 | from |
+----+-------+
插入ID：找一個全局惟一ID生成器，可以專門找一臺服務器生成ID，不做其他事情。Mariadb-Galera集群雜記